GF72.29-P-6030RT Power Window Motor, Component Description

GF72.29-P-6030RT Power Window Motor, Component Description
- up to model year 08

Component Identification:

Location
The power window motors are located in the corresponding doors below the door paneling

Design
The power window motors are DC motors which turn to the right or left depending on the actuation. Each power window motor has a thermal safety switch and two halls sensors each for position recognition.

Position recognition
The position counter in the corresponding left front door control unit (N69/1), right front door control unit (N69/2) and front SAM control unit (N10) evaluates the signals of the corresponding Hall sensors of the power window motors. Depending on the actuation direction, the counter is increased when "opening" and correspondingly decreased when "closing". The zero position is set by normalization. The position recognition is always active except in the sleep mode.

Rotation recognition
The rotation recognition is performed by evaluating both Hall sensor signals located offset 90° on each of the power window motor shaft. Each edge of the Hall sensors is evaluated for rotation recognition.

Overload protection
The power window motors are switched off by a thermal switch to protect against overheating. After a waiting time of 5 to 10 s, the power window motor switched off can be actuated again.